73" Yak Servo Size?  
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All Forums >> RC Airplanes >> Giant Scale Aircraft - 3D & Aerobatic >> Quique's Aircraft Support >> 73" Yak Servo Size?
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73" Yak Servo Size? - 7/8/2006 5:38:37 AM   
Gimble Bender


 

Posts: 153
Joined: 2/3/2005
From: Farmington, KY, USA
Status: offline 		Reza,
What size servos are required for the 73" Yak? (oz/in) I tried downloading the manual but can't get it to work on my pc. I have some Futaba 3010's that just came out of my newly re-kitted Jerry's Big Boy and wanted to know if they were enough.

Specs..

4.8V 72.2 oz-in. 0.20 sec/60°
6.0V 90.2 oz-in. 0.16 sec/60°

I run Fromeco Li-Ion batterys and regulators at 6 volts.

I also have a Futaba 9151 digital to use on the rudder.
4.8V 131.9 oz-in. 0.19 sec/60°

Thanks,

GB


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Built for go, not for show.
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RE: 73" Yak Servo Size? - 7/8/2006 5:41:59 AM   
Rezagh


 

Posts: 1854
Joined: 6/10/2004
From: Rancho Santa Margarita, CA, USA
Status: offline 		Hi GB,

Rudder is OK but others are not strong enough. Don't use those servos. Get at least 130 oz and DIGITAL!

Thank you,
Reza
Quique's Aircraft Support

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Quique's Aircraft Company

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RE: 73" Yak Servo Size? - 7/8/2006 6:52:44 AM   
Gimble Bender


 

Posts: 153
Joined: 2/3/2005
From: Farmington, KY, USA
Status: offline 		Thanks Reza,
Thats what I thought anyway, but wanted to make sure. I think i'm going to let Randy (randy racer) be the guinee (Sp???) pig for this one since he's putting a 3W 28 in his. My JBB had a 3W-24 that i'm trying to get broken-in. (It flamed out on me at a bad time, resulting in the re-kitting of the airframe.) If all works out well and he likes it, I will probably do the same. I'll also install JR 8611a servos on all surfaces. The futaba servos I have were allready in that big boy when I got it.

Thanks again Reza,

GB

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Built for go, not for show.

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RE: 73" Yak Servo Size? - 7/8/2006 8:02:45 AM   
Rezagh


 

Posts: 1854
Joined: 6/10/2004
From: Rancho Santa Margarita, CA, USA
Status: offline 		Anytime GB. Yeah, have Randy do it first

Keep me posted.

Thanks,
Reza

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Quique's Aircraft Company

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RE: 73" Yak Servo Size? - 7/8/2006 12:07:33 PM   
randy racer


 

Posts: 1380
Joined: 4/7/2005
From: mayfield, KY, USA
Status: offline 		i hope to have the 73 ready to fly in a week or so. after building 2 102"s in the last 5 weeks i need a couple of days away from the build table and some time at the airfield. i will keep you posted.

GB, it's about time you stepped up to a QQ yak. go ahead and get the 73" on the way we will figure out what engine to use.

randy racer

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Ford RV Refrigeration Training Center & The RVRN

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RE: 73" Yak Servo Size? - 7/8/2006 2:03:48 PM   
ramduster



Posts: 348
Joined: 1/14/2004
From: PELZER, SC, USA
Status: offline 		Will the Jr sport 125 Mg or hitec 645 Mg work because that is all I have at this time.

(in reply to randy racer)
       Post #: 6

RE: 73" Yak Servo Size? - 7/8/2006 3:46:36 PM   
randy racer


 

Posts: 1380
Joined: 4/7/2005
From: mayfield, KY, USA
Status: offline 		what are the specs on those servos? always use the best servos you can afford, it's like putting $$ in the bank. the plane will fly better and longer, and when it's time for a rekit you will have good servos to put in the nest and bigger QQ yak.

randy racer

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Revver Bro #196
Ford RV Refrigeration Training Center & The RVRN

(in reply to ramduster)
       Post #: 7

RE: 73" Yak Servo Size? - 7/8/2006 6:18:09 PM   
ramduster



Posts: 348
Joined: 1/14/2004
From: PELZER, SC, USA
Status: offline 		HS-645MG
107 4.8V
133 6.0V
.24 sec.
.20 sec.
JR Type: Standard Hi Torque Metal Gear
Torque: 125 oz/in @ 4.8V
Speed: .21/60 @ 4.8v, .17/60 @ 6v
Dimensions: 0.73 x 1.55 x 1.46
Weight: 1.60 oz
Application: 120 size Aircraft
not sure what the torque is at 6.0 volts on the JR but should be about the same as hitec.

(in reply to randy racer)
       Post #: 8

RE: 73" Yak Servo Size? - 7/9/2006 2:51:57 AM   
randy racer


 

Posts: 1380
Joined: 4/7/2005
From: mayfield, KY, USA
Status: offline 		that should work. good luck with the build.

randy racer

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Ford RV Refrigeration Training Center & The RVRN

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       Post #: 9

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All Forums >> RC Airplanes >> Giant Scale Aircraft - 3D & Aerobatic >> Quique's Aircraft Support >> 73" Yak Servo Size?
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